United Nations war crimes investigators called on world powers on Tuesday to pressure the warring sides in Syria to return to the negotiating table to end the conflict and civilian suffering.
Paulo Pinheiro, chair of the U.N. independent commission of inquiry on Syria, said that the Syrian government was conducting daily air strikes, while militant groups including Islamic State also carried out indiscriminate attacks.
"We need all states to insist time and time again that influential states and the (U.N.) Security Council unconditionally support the political process," Pinheiro told the U.N. Human Rights Council in Geneva.
The Syrian government and opposition High Negotiations Committee (HNC) - who ended the last round of talks in Geneva in late April - must resume talks and agree to confidence-building measures, including an end to indiscriminate bombings, granting access to besieged areas and releasing prisoners, he said.
Paulo Pinheiro, Chairperson of the Independent Commission of Inquiry on Syria delivers a statement during the presentation of their report to the Human Rights Council at the United Nations in Geneva, Switzerland, March 15, 2016.
"Schools, hospitals, mosques, water stations - they are all being turned into rubble," Pinheiro said. "Tens of thousands are trapped between frontlines and borders in the north and south of Syria."
Syria's ambassador Hussam Aala, in a speech to the rights forum, accused regional powers of "supporting terrorism" and "causing the failure of intra-Syrian talks in Geneva".
He said schools and hospitals in Aleppo were being destroyed and civilians killed by missiles provided by Turkey and Qatar to the Nusra Front, al Qaeda's Syrian branch.
European Union ambassador Peter Sorensen said: "The EU condemns the excessive, disproportionate and indiscriminate attacks that the Syrian regime continues to commit against its own people."